Machine fob making cement pipes



1.*TH0MAS. MACHINE FOR MAKING CEMENT 4PHES. APPLICATIONFILED SEPT. l1. i919..

3 SHEETS-SHEET l.

Rissued Nov. 7, 1922.

- ,liu/venian .jmes @a mmf,

1. THOMAS.A

MACHINEy FOR MKING CEMENT PIPES.

.APPLICATION FILED SEPT. H, 1919.

Reissued N 0V. 7, 1922.

3 SHEETS-SHEET 2.

.5, Mgg@ Reissued Nov. 7, 1922. o

. UNITED STATES) t Re. 15,487 vP ATENT QFFICE.

JAMES rHoMAsforTACoMA, WASHINGTON.

* MACHINE FOB. MAKING CEMENT I IVPES original No, 1,211,787, dated January 9, 1917, Serial No. 59,906, filed November 6, 1915. Application for reissue iiled September 11,1919. Serial No. 323,180. 1

T o all whom t may concern.'

I eration and whereby pipes may be more IBe it known that I, JAMES THoMAs, a citizen of the United States, residing vat Tacoma, in the countyof Pierce andState of Washington, have invented certain new and,

useful Improvements in Machines for Making Cement Pipes, of which the Vfollowingis aspecification. i y i .This invention relates to cement pipe making machines of the class illustrated and-described in my U. S. Patents, No. 929,898 of August 3, 1909, and No. 931,972, .ofAugust 24,190.9.y Y

The Iobject-of the present invention is the perfecting of machines of this type to render them more durable and efficient in oprapidly and economically produced.` '1 The vinvention consistsin the novel-construction, arrangement and combination of parts, as will lbehei'einafter describedand claimed.` f f -i In the accompanying drawings,Figurea.1 is a front elevation of a cement pipefma-I chine embodying my invention. -F1g. 2-is a transverse vertical section taken. substantially through 2-2 of Fig. 1. Fig. 3 is a horizontal section through .ofFig.2 withv parts omitted. Fig. f1 is a top plan view-of the machine frame. Fig. 5 is a transverse vertical sectional view of the mold and parts associated therewith Vin the forming of a pipe. Fig. 6 is a fragmentary sectional View of the lower ends of a pipeand-the moldv in the positions occupied after the latter has been released. Fig. 7 is'a viewsimrlar to Fig. 5 illustrating the positionsof certain parts in one stage of operation'. Fig. 8; s-sof legga machine and the various devices fortransmitt-ing power therefrom. Fig. 13 is a view lpartly in side elevation and partly in vertical section of a modified construction to illustrate the manner of employing two tablesA alternately and` the controlling mechanism therefon f The improved machine is providedwith a main frame comprising post members 2 extending upwardlyfrom a base 3 and rigidly connected at their upper ends to longitudinal tie-.platesfl and transverse tie-plates 5 and To one side of such vmain frame and rigidly connected therewith are upright posts 6 which serve to support the hereinafter explained' concrete agitating and feeding appliances'. Asshownin Fig. 2, I provide upon a bridge element 31 of the frame base 3 a fixed standard 7 havingv a'central portion'which serves asth-e journal bearing for the hub 8 of varotary table 81 and.` extends above the latter to terminatek in a polygonal upper end 7,1 above a shoulder 72 of the standard.

The table 81 is provided on its under side with concentrically arranged circular racks 82 and 83 which are adapted to be selectively ed with toothed pinions' 91' or 92 to effect tension 'being in turn journaled in a box 111.

lSaid extension is formed Aat its outer end with portions1121 and-122 which are respectively adapted to fit'into the bor-es of the above-mentioned pinions 91-and 92. Said extension is also formed with or has rigidly secured thereto a member 13 of a frictionl clutch 'whose othermemberf131is splined to the shaft and may be shifted into and out of engagement'by a' controlling lever 132 accordingto whether'the table is to be rotated orl otherwise.A y f g y lThe shaft 10 is driven in any suitableV manner, as bymea'nsof a powerbelt, not shown passing about aV pulley 14 of' the shaft. 1

15 -representsa mold with a cylindrical central portion and an enlarged upper por-` tion 151 which conforms to the outer surface ofthe hub end P1', Fig. 5.,-'of a pipe P which is molded therein. At its lowerend the mold is provided with laninternal flange 152 to, sustain fthe pipe support or palette 16, and at 'the outer side is a peripheral flange 17 from'which protrude a number of spaced lugs 171.v 161 represents legs provided for said palette, and are utilized for holding the latter when` the mold is being disconnected from a pipe. Said mold is constructed of two uor more laterally separable parts which are secured together by clamps, such as 18,

block 441. so th-at it'will almost reach Vt-he table .Whenat the lower end of itsstroke, as effected by the revolution of the crank-pin 421. As the mold is fed with the concrete, the accumulation of the material will progressively cause the tamper to be .shoved up through said block subject to the resistance dueto the bar gripping devices of the block, and which may be adjusted 4so t-hat the proper force will be applied to the Work.

I show in Fig. 13 a manner of supporting two tables as 8a and v8b upon a platform 50 :which is rotatable upon a lpost 51 journaled in a step-bearing 52 so-that said tables may be alternately revolved into axial positions with thecore for making` a pipe. Where two `tables are thus used, the frame beam 31 is-providedwithja protuberance 32 to engage i-n recesses 501 or 5O2as they are successively presented theretos. To `cause such'engagement ofthe platform With said protnberance, the platform is lfirst elevated to=raise :the samefrom its engagement and after the platform' has been manually or otherwise rotated, `the"platform is lowered to lock it-in its adjusted position; to Which endsfthepost 51 is'provided'with a` screw- -thread 512 Which is engaged with an internal screw-thread of a Wheel 53. supported by the step-bearing 52. y l

54'is a-cable having a Weight 541 at one end and after passing overa guide pulley 55 is wound infa'number-'of turns about a Wheel 5S-and thence about a guide-pulley 56 to a drum 57 to which the other end of the cable 54 is secured. This drum is rotatably mounted on a power driven shaft 10a and is coupled'therewith when desired, by a clutch element571 ofthe'drum being engagedbya clutch element 13a Which is engagedwith the shaft 101, as by a spline, notl shown. lThe clutch element 1311 is shifted by a forked lever13" and may alsobe utilized to actuate the clutch element 131 for the shaft eXtension 12 which, as shown in Fig. 14, is formed at one endof the element 131.

vTo operate the above described platform, the drum' 57 is coupled to the shaft `10 'resulting in the Windingr of the cable 54 about the drum and the rotation of thewheelf Which serves as a nut vupon post 51 to cause the platform to be raised from its engaged position `with the frame protuberance 32, whereupon the platform rotated to transpose one end ofthe platform for the other;- Then this is accomplishech'the drum 57 is released from its shaft and the power of the weight 541 asserts itself to rotate the wheel 53 so as 'to lower the platforminto locking position. l 'f ".lheoperation of the invention may be eX- 4 plained as follows: Vithy the' table S1 motionless, the mold 15 is secured centrally thereon by rotating: the mold on the chair seats 191`to engage the lugs 171 underfthe chair branches 191. The drum 25 Iis then uncoupled from the shaft 26 to lower the core 15 into engagement Withthe standard end The shaft extension 12 upon which one of the bevel-gears 91 or 92 has been'sec'ured,

is then operatively connected by clutch elements 13 and 131 to the shaft 10 to effect the rotation of such gear to drive the table, through 'the agency ofthe rack 81 or 83. As the table thus driven, concrete is supplied from thevhopper 311 through the chute 31 linto the space surrounding the core in the mold and as'such material is deposited in themold, it is compacted through the oflice of 'the tamping-bar 35. This tamping-bar,v

asbefore explained, is yieldingly carriedfinA i a block 4413s() thatrv as the material rises toward the topof the mold, the tamping-bar Will correspondingly slide upwardly through the box subject to the resistance dueto the fric-.tional rengagement of the referred to devices in such block. After fthe concrete has beenvsupplied to about the bottom of the enlarged portion. 151 ofthe mold, the carriage 361 is moved haelt to carry the tamping bar into proximity to the inner periphery of the mold part 15'. The collar130 is. then placed in its operative position, as represented in Figi-Q 5, and the filling` in and tamping of the material is i i completed.

In the above described operation, the core remains stationary While the mold and palette rotate with the table .and by reason of the surfaces of the lmold and palette Which are in contactvvith the material being `greater than the surface of the core Which contacts with the materiahthe pipe in the process of making is rotated with vthe mold and the linner pipe surface is rubbed against the core to effect the face. f l

When a pipe has 'been formed in the'mold the core is Withdrawn, While the moldand pipe yare still turning. by being hoisted through the instrumentality of the cable 23 whichy by-'being arranged'to suspend the' core-supporting' bar 211 in a bight of the cableand between two leads which extend vertically, raises the bar and coreV axially of the pipe. As the vcore ris so raised` it is prevented by the non-turnable bar 211 from turning* with the still rotating mold and pipe. K f y The mold with thecontained pipe proceeded with until a pipe .isv

glazing of Such inner sur` Y palette 16 are removedv from the tab-le and placed on a hoor F. Fig'. 6. whereupon the clamps 18 are disengage'dto release the pipe and the mold then dropsy to the v,floor While the .pipe isv maintained at `a distancev above the floorjbyV being borne upon the palette which is itself held'by thelegs T161. By thus allowing the mold to fall in a direction Vani-` yally of the pipe, the mold is freed and enables it to be opened laterally and removed without any cement adhering theretoyas will` occur when the mold is `opened laterally without first dropping to strip it from vthe .material` When apipe and its mold have been removed from the Stable, it is replaced by another mold and a pipeformedtherein, as de- By prcvision of a polygonal' end 71k tothe core-supporting standard and with a similar shaped .socket inthe core, the core may be held 'in its yvarious rotary positions so as `to successively present new 'portions to where the tamping is being effected vfor, otherwise,

A' a non-rotatable core would soon become worn Y at'vone Vsidegandubecfome unfittedfory use. i

supporting said mold, and means to rotate.

the table 'and said mold, a non-rotatable standard extending upwardly through -the center'of` said table and terminating above the latter in apolygonal'head, and a cylindrical core provided'at its lower end with a` socket,said socket being adapted to engage the `standard yat various rotary positions of y the core, to secure the latter 4against rotary movements. v A n 3. In a machine ofthe 'classfdescribed, the combination with a mold, a lrotary table for j supporting said'mold, andl means to rotate thetable and said mold, a `non-rotatable lstandard extending upwardly vthrough Ythe center of said table and terminating above the latter inaI polygonal heada cylindrical core provided with a socket in *its lower end,

[said Ysocket, rbeing adapted `to engager the standard at various rotary vpositions of the core to secure the later against rotary move` ments, a hoisting rod Yfor said core, and means to secure the core to said rod in selected rotarypositions. i

4, In a machine of the class described, a

core, an upright rod having an openingY ad-` jacent its lower end, means to detachably connect said core to the lower end of the rod, a guide for said rod, a hoisting -cable arranged with a bight engaging said rod in thebPening-thereO, a cable winding drum,

oi 'the table and and gufidefsheafves for :directing said cable to extend .upwardlyat "opposite sides foiithe rodtrom said openingand thence ito vsaid drum.

5. In ra machine ofthe-classdescnibed, 'the f combination with the rotary table, :a :mold

`provided with lan :enlarged upper eend, 1a -cylindrical core, .non-rotatable means extending through 'the table for `supporting 'the coreiand alsosecuriingthessame against'rota" tion, and a collar provided with lmeans whereby fthe Leollarfmayibe v'detsmhably supported :by the-core, said icollariserving `as internal .lform for `zthe .'belleanouthfoff :a lipipe.`

'6L In a machine iof thefrcl'ass described, the

combination with: a yrotary table, and ya mld :formed 'of "laterally `separable members, Aof chairs :provided .uponthetable for supporting sa-i'lmoldfat aldistance Ithereabove, a pal,

ette v.adapted lto be `supported by the mold 7. Ina man hine of zthe .classdescribed,in combination, a core, Aan iupright rod :adapted to be detachably connected fto` A1said rcore, a cable connected to saidrod and, guided eso as to ksupport the rod by two leads, a lpowerdriven drum vfor actuating saidacable 4to elevate 4or lower the `core, aand .'-means @for guiding-fthe cable :leads tothe drum. y

' 8. In a machine ofthe `class described, the combination with aarotamy Ltable,1o'f a mold comprisingilaterallyseparablezmembers,iand a. i palette forming 1 party of the bottom ofV said mold and axially movable upwardly 'therein from its normal position-and accessible `Afrom its under side, :said epalette vhaving 1 support# ing rportions extending below the lower end of the mold, the arrangementfbeinggsuch'that when f the -ille'd `mold is Iremoved )from :the

table 'and supportedbya member engaging 'the palette the mold may be -moved `,downwardly over the :palette-and i supported articleL as a preliminary Vto `lateral separation `of the :mold members.

9. 'In a machine-of theyclass described, the combination `with, a frotarytable, of aimold comprising llaterally separable members, and

when the latter is :supported 'by said chairs,

- andxmeans -provided fon; vthe ipalette vwhereby the same issupported whenthe mold Vis v,dis-

engaged rom the ipalette.`

ros

uns

arpalette ormingpart'ofthebottom :of said mold and axially movable upwardly therein Jfrom its `normal position and accessible from its underl side, the Varrangement 4being suchthat when the filled `mold is 4removed Jfrom the Ytable vand supported by va "member engaging the palettethe moldl may be moved downwardly over the palette and supported article asa preliminary to lateralseparation vof the mold members.

"10. A mold "for .concrete pipe comprising l a pairof laterally separable external .mold

members, andra palette forming the V`bottom` of said `mold and axially movable in v:said

members, said palette-beingffreely aecess1ble for external support beneath the y same, whereby the pair of mold members may be slipped axially downward on the freshly formed pipe supported by the palette before being laterally withdravirn vfrom said pipe,v

and supporting means carried by the mold for engaging and supporting the palette.

11..In a machine of the Class described, the combination with a rotary mold-supporting table, means for rotating said table, a mold supported in said table, a core co-aeting with said mold, a stationary pin projected upwardly through said table, yand y having an axially separable connection with l sald core holdlng the same against turning,

means for raising the lcore from the table, and means engaglng the upper end ofthe core and remaining active* during raising of the core for holding the core against turning.

In Witness whereof, I have hereunto set my 'i hand at Taco-ma, Vashington, this 26th day of August, A. D. one thousand nine hundred and nineteen.

JAMES THOMAS. y 

